//*******************************************************************************************
// ParameterTester.java    Author:Duanzhixuan
//
// Demonstrates the effects of passing various types of parameters.
//******************************************************************************************

public class ParameterTester
{
  //-----------------------------------------------------------------------------------------
  //  Sets up three variables (one primitive and two objects) to serve as actual parameters to the changeValues method.Prints their values before and after calling the method
 //*******************************************************************************************
public static void main(String[] args)
{
   ParameterModifier modifier = new ParameterModifier();
   
   int a1=111;
   Num a2 = new Num(222);
   Num a3 = new Num(333);

   System.out.println("Before calling changeValues:");
   System.out.println("a1\ta2\ta3");
   System.out.println(a1+"\t"+a2+"\t"+a3+"\n");

   modifier.changeValues(a1,a2,a3);
   System.out.println("After calling changeValues:");
   System.out.println("a1\ta2\ta3");
   System.out.println(a1+"\t"+a2+"\t"+a3+"\n");
}
}
